PRE-CHARGING CONTROL SYSTEM AND METHOD FOR ELECTRIC VEHICLE AND HIGH-VOLTAGE POWER-ON CONTROL SYSTEM

摘要

A pre-charging control system and method for an electric vehicle and a high-voltage power-on control system. The pre-charging control system is applied to a vehicle high-voltage circuit, and comprises: a battery management system BMS (110) used for managing battery packs; a direct current-direct current DCDC converter (120) used for pre-charging a bus capacitor, the DCDC converter (120) being connected to a low-voltage storage battery (130); and a vehicle control unit (140) used for controlling the battery management system BMS (110) and the DCDC converter (120), wherein the vehicle control unit (140) is further used to send a pre-charging instruction to the DCDC converter (120), and the DCDC converter (120) is further used to respond to the pre-charging instruction and then invert electric energy of the low-voltage storage battery (130) into high-voltage electricity, and output the high-voltage electricity to the vehicle high-voltage circuit so as to pre-charge the bus capacitor.